ITU-R RAPPORT BT 1226 FRENCH-1990 Characteristics of a programme delivery control (PDC) system for video recording《一个项目的交付控制特性(PDC)的视频记录系统》.pdf

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ITU-R RAPPORT M 766-2 FRENCH-1990 Feasibility of frequency sharing between the GPS and other services《全球定位系统和其他服务之间的频率共享的可行性》.pdf

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